Made utils.variable_from_module more generic (it can now load pretty much any form of module it's given and also supports searching and returning multiple variables).
Removed the variable-load functionality from utils.load_module; this is now purely a loader - use variable_from_module instead.
I found out that one couldn't import from src.commands.default due to the __init__ file being restrictive for the sake of the ev API. Removed that and instead imported the default commands into ev.py with the help of utils.variable_from_module instead. Some more fixes in ev followed on this.